Bridge



Dc. 1o, 1929.

J. B. s'rRAuss BRIDGE Filed Feb. 29, 1924 2 ASmeets-Sheet l Ilwl Dec. 10, 1929. J. B. sTRAuss 1,739,103

BRIDGE Filed Feb. 29, 1924 2 sheets-sheet -2 only, oo fc Patented Dec. 10, 1929 i A' -v STATES y PA oFF-ICE BRIDGE YI:Applicatin'-rilvedIEelirueiry-ZS, 1924. l=Seria1 Nbr6953879.

This invention relatesto 4-improvementsin trunnions .are provided with .suitable bearbascu'lesbridges and has for itsobjectftmproing'aiwhich are connected with these outside Vide :a new and Vimproved bridge of v'this deand inside supports. The taiLend of the leaf Scription. The invention :has as .a further projects beyond the trunnions and a counterobject tofprovideaimeansfor supportingthe Weight -10 :is :connected therewith. This movableieaf whichshall; be economical and counterweightispreferably of concrete and eficient. The invention has as a further obisprovided ateach side with slots l-l {forthe jectito provideacounterweight.construction posts-4-ofthe outsidefsupports, Thefbottom for \the Vmovable deaf.v The invention thas v ofsftheseslotsfare indicated byfdotted line ll",

m furtherobjeotswhidhare:more vparticularly F l. Thecounterweight isk also provided pointedl out :in the accompanying sfpecificawith slotsffor the insidetrunnionSupports 7. tin. y I. lienth'ebridgefis closed the-upperlportion Referringnowto the drawings: d 120i therslot receives-the horizontalportion .Figz'lrisf'a viewshowingfla :side elevation hof the insidesupportand-apart ofthe in- 15 inpartrsecti'on of'one'lform'ofdeviceembody- Clinedportion asfclearly .'-shownin Fig. 1. ingitheinvention. Y. Y When =the l.bridge is open the lower portions .'Fig;: 2,is'a vsectional-view on'line "2-2of l2aof thezsiotsreceivethe inclined portions \1 with parts omitted. f e 7 .-ofxtheinsidewsupports The bottom ofthe .Figu i'sasec'tional view on line 3-3 of slots for-thejnsidefslupports'areindicated by d Fig. :Iwith partsioinitted. V. dotted line 12b of Fig. l. It'will thus be seen .Ilign` 4 is'afsectional viewtzken'onsline-i that:thereisrno[interference ybetween the staofFigxl, Awith:pai-'ts.omittedl .v tionarylp'arts-andimovable parts for when the `f/Fig; 5.is:a sectional-.viewtaken on Iinef'- leaffis closed, (as in Fig. 1') the upper ends of'fligl-withfpartsomitted. f f ofthe' inside :supports-,enter the slots 12 in :g5` Like'numerals.refertoflikezparts-through; the fcounterweight and whenthe vbridge is 75 oiltthefseveraigures. liftedthe posts enter theslots 1l in the eferring now to the drawings, -I-fhave counterweight andthe inclined'portion of the shown :a cantileverdeaff section or Vbascule inside'supports enterthelowerjportion l2a of leaf l zprovided with'atrusses 2 lat Yopposite thetfslots in the 'c'ounterweight Connected -36 Sidesitheredf. fEach't'russ is'providedlwith a with-thei-'tru'sses 2 .is afrack 13 which is1en- 8O trunnion'3whichrprojectsoneachside theregaged by pinions 14- mounted on the driving of `(fse'e Fig); l,Each rtruss, that is each shaft which vis'driven byan suitable motor trunnion,;has an outside'fsupportiand an in- (not shown). Therefmay: e two racks 13 side 'support, 'the truss being between :these andtworpinions 51.4,:one for'eachtruss. An

a's-s'upports. The outside supports" consi-st .of approachfloorl?is'supporfedupon Sulitbe ss p-OSts 'ii-fwhich are .guimbly brac-@fd by-th supports. l'In :the construction shown rthe forward bracesv y'and'the'lateral braces v"4a. Plefhasaff'qntwu 'lmd a rear Wall 17 There i'srgffont @eine idadeupprte wiuh and ihemheed 11H18? 'm9111011 s uPPOljt y g @gag- .the rus-S how :in Land which maybe-a trussfgirder (r the hketex- 4o mies the uve iad, anuwhim 'iS-connected ilfggf.QQTQIH QQ 9G with 'th-fpists '4' .'IThe dum-de. ablyconnectedwith the outerlimit oijthe outeah..trupmn'conslsts ,Ofxa'.longitudmalfdk side support-as by means of the member 8. agonail,.Suppomgmembef (Se'Flgsiland The :counterwight .10 is rigidly connected 45 2) 'Which-haSJSJOWGIGUl'qmlctedftothe byfthemain trussesz and has .oantiievelcd 95 live iloadsuppolitandftheioutsde 'Posts ends extendingflaterally'beyond thetrusses. by mell's'bfe'the@Omleftflg membeSS --The It willzbe `seeii.thatrthe various Aslots in the upperfends @ofthe longitudinal, ll'ClIlGd counterweight :required `for the inside and inside :supports are preferably horizontal outsidei-supports-:for 'the -ftiunnions leave a 50 andarefsupporteduponithesupport). The sofd'centralportioniextending:across from 100 vrated trusses,

truss to truss, and it will further be seen that these slots being at different points along the counterweight permit the members of the trusses to be embedded therein as shown in Fig. 4, the ends of the counterweight at each side projecting beyond these trusses. This gives a large space `for a large bulk, light weight counterweight such as that made from concrete. be noted are triangular shaped, each having vertical, horizontal and inclined members, the vertical live load supporting member being connected with the inclined member, there being cross connection between said inclined member and said vertical live load supporting member, said cross connection being located above the bottom of the supporting member.

I claim:

l. A bascule bridge comprising two sepatrunnions for said trusses, outside supports upon which one end of each of said trunnions is mounted, means associated with said supports for resisting the vertical,

, longitudinal and transverse forces thereon,

an underneath concrete counterweight located under the roadway and extending between the trusses and comprising a top portion rigidly connected to the ends of the trusses, and portions projecting outwardly and laterally from said rigidly connected" portion and cantileveredv therefrom, said cantilevered portions being provided with means to clear said outside supports when the bridge is open. l i

2. A bascule bridge comprisingk a pier having a front and rear wall, trunnions for said trusses, supports for said trunnions, one outside and one inside each truss, the inner support comprising a longitudinal member extending from a point in front of the trunnion to the rear wall of the pier, the outer support extending vertically from the trunnion to the pier, and a supporting member for said vertical support to take the horizontal forces on the trunnion.

3. A bascule bridge comprising a pier having a front and rear wall, trusses for said trunnions, supports for said trunnions, one outside and one inside each truss, the inner support comprising a longitudinal member extending from a point in front of the trunnions to the rear wall of the pier, the outer support extending vertically from the trunnion to the pier, and a supporting member for said vertical support to take the horizontal forces on the trunnion, the trunnion supports taking the dead load reactions from the trusses, and a part formed on the front end of the trunnion supports to take the live load reactions from the trusses.

4. A bascule bridge comprising a pier having a front and rear wall, trusses on which said trunnions are mounted, supports for said-trunnions, one outside and one inside The outside supports it will.v

each truss, the inner support being a longitudinal member extending from the outer limit of the outside support to the rear wall of the pier, the outer support extending vertically from the trunnion to the pier, and a supporting member for said vertical support to take the horizontal forces on the trunnion, the supporting 'member and the truss .extending forward of the trunnion and connecting to a supporting part for the live load reactions from the trusses.

5.vv A bascule bridge comprising two separated trusses, a concrete counterweight eX- tending across the space between the trusses and rigidly connected to the ends thereof, said counterweight having cantilevered ends which project beyond the trusses, trunnions for said trusses, inclined longitudinal inside supports for said trunnions and slots in Vsaid counterweight for receivingsaid inside supports both when the main span is Open or closed.

6. A-bascule bridge comprising two separated trusses, a concrete counterweight eX- tending across the space between the trusses and rigidly 'connected -to the ends thereof, said counterweight having cantilevered ends which project rbeyond the trusses, trunnions for said trusses, inclined longitudinal inside supports forsaid trunnions and slots in said counterweight for receiving said inside sup-J ports bothwhen the main span is open or closed, outside supports forsaid trunnions, the cantilevered ends of said counterweight having slots to receive said outside supports.

V7."A bascule bridge comprising trusses, trunnions therefor, supports on the outside and the insidenofthe trussesv for said trunnions, said inside supports comprising linclined longitudinal members, the rear ends of said members bent at an angle to the inclined portions.

8. A bascule bridge comprising separated trusses, trunnions therefor, supports for said trunnions, a counterweight extending across the space'between the trusses and projecting laterally at each lend `therefrom,vthe cantilevered portions of said counterweight having two slots at each end thereof on opposite sides of the trusses to receive the supports for the trunnions of the bridge as the latter is moved to different positions. v

9. A bascule bridge comprising two separated trusses, trunnions therefor, inside and outside supports for said trunnions, each outside support comprising a triangular shaped member, made up of vertical horizontal and inclined members, a vertical live load supporting member connected with the incline member of said support and a cross connection-between said incline member and said vertical live load supporting member.

10. A bascule bridge comprisinor separated trusses, trunnions therefor, insidje and outside supports forthe trunnions, each inside support comprising a longitudinal member having an inclined portion which extends underneath the trunnions and a horizontal portion and a support for said horizontal portion.

11. A bascule bridge comprising separated trusses, trunnions therefor, inside and outside supports for the trunnions, each inside support comprising a longitudinal member having an inclined portion Which extends underneath the trunnions and a horizontal portion and a support for said horizontal portion, a counterweight connected with said trusses, said counterweight having slots at the top thereof for the horizontal portions of the inside supports and slots at the front and bottom thereof for the inclined portions of said inside supports.

Signed at Chicago, county of Cook, and .State of Illinois, this 11th day of February,

JOSEPH B. STRAUSS. 

